Really cool! I don't what I'd use them for but they're great!
Fight against though nasty goblins of course!
I've also got plans to bring out some other Fantasy WW1-themed forces to fight aginst them. Goblin Garrison make German Goblins, and Hasslefree have British Halflings already.
As an aside I know of at least one guy that is using them for a Squat Imperial Guard force, as Bob Olley also sculpted them originally (along with his excellent Scrunts).